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Finding the Fourth Proportional to 639,825.48, 960,328.62 and 324,503.82

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Solution

The fourth proportional to 639,825.48, 960,328.62 and 324,503.82 is: 487,055.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,825.48 : 960,328.62 = 324,503.82 : x
  2. Step 2: Convert to fraction form
    639,825.48/960,328.62 = 324,503.82/x
  3. Step 3: Cross multiply
    639,825.48x = 960,328.62 × 324,503.82
  4. Step 4: Simplify right side
    639,825.48x = 311,630,305,645.33
  5. Step 5: Solve for x
    x = 311,630,305,645.33/639,825.48
  6. Step 6: Final answer
    x = 487,055.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.